The 12th-placed Red Devils have struggled so far this term under new boss David Moyes, slumping to Premier League defeats to fierce rivals Manchester City and Liverpool, while also falling to West Brom at Old Trafford on Saturday.

And Macari feels Ferguson's departure from the bench was a measured action.

"He’s always been a good judge of everything,” Macari told Talksport. "When he shocked everyone and said he was retiring, I thought, ‘is he aware of what’s around the corner, is he taking the view that one or two of his best players are coming to an end’?"

The ex-United midfielder was also critical of the club's disappointing transfer window this summer.

"Every team in the country needs new blood," he added. “"he supporters get tired of watching the same players.

"I just felt this summer he [Moyes] needed to bring in some new players. They brought in one main player [Marouane Fellaini] but he wasn’t the sort of player the supporters wanted to see. They wanted a little ball playing midfielder."